Mapping Properties of different types, No default constructor for type 'CultureInfo', please use 'ConstructUsing' or 'MapWith'

[codelovercc]

Hi,

I use Mapster with version 7.3.0 and .Net 7.0.1

I have two classes.

public class Entity
{
    public Guid Id { get; set; }

    public string Content { get; set; } = default!;

    public string Note { get; set; } = default!;

    public CultureInfo CultureInfo { get; set; } = default!;
}

public class Dto
{
    [Required, StringLength(64)]
    public string Id { get; set; } = default!;

    [Required, StringLength(4096)]
    public string Content { get; set; } = default!;

    [Required, StringLength(1024)]
    public string Note { get; set; } = default!;

    [Required]
    public string CultureName { get; set; } = default!;
}

And with mapster config

TypeAdapterConfig<Dto, Entity>.NewConfig()
            .Map(entity => entity.CultureInfo, dto => CultureInfo.GetCultureInfo(dto.CultureName));
TypeAdapterConfig<Entity, Dto>.NewConfig()
            .Map(dto => dto.CultureName, entity => entity.CultureInfo.Name);

Now execute this code

//Mapster configuration is applied.

var dto = new Dto
        {
            Id = Guid.NewGuid().ToString(),
            Content = "this is a test content",
            Note = "for test",
            CultureName = "zh-CN"
        };
var mLocal = dto.Adapt<Entity>();

var mLocal = dto.Adapt(); throws a Mapster.CompileException: Error while compiling.

Mapster.CompileException: Error while compiling

Mapster.CompileException
Error while compiling
source=MindOcean.Models.Common.MessageTemplateLocalizerDto
destination=MindOcean.Data.Entities.MessageTemplateLocalizer
type=Map
   at Mapster.TypeAdapterConfig.CreateMapExpression(CompileArgument arg)
   at Mapster.TypeAdapterConfig.CreateMapExpression(TypeTuple tuple, MapType mapType)
   at Mapster.TypeAdapterConfig.CreateDynamicMapExpression(TypeTuple tuple)
   at Mapster.TypeAdapterConfig.<GetDynamicMapFunction>b__66_0[TDestination](TypeTuple tuple)
   at Mapster.TypeAdapterConfig.<>c__DisplayClass55_0`1.<AddToHash>b__0(TypeTuple types)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Mapster.TypeAdapterConfig.AddToHash[T](ConcurrentDictionary`2 hash, TypeTuple key, Func`2 func)
   at Mapster.TypeAdapterConfig.GetDynamicMapFunction[TDestination](Type sourceType)
   at Mapster.TypeAdapter.Adapt[TDestination](Object source, TypeAdapterConfig config)
   at Mapster.TypeAdapter.Adapt[TDestination](Object source)
   at MindOcean.Test.UnitTest.MapsterTester.TestTwoWay() in /Test/MapsterTester.cs:line 71
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)

Mapster.CompileException
Error while compiling
source=System.Globalization.CultureInfo
destination=System.Globalization.CultureInfo
type=Map
   at Mapster.TypeAdapterConfig.CreateMapExpression(CompileArgument arg)
   at Mapster.TypeAdapterConfig.CreateInlineMapExpression(Type sourceType, Type destinationType, MapType mapType, CompileContext context, MemberMapping mapping)
   at Mapster.Adapters.BaseAdapter.CreateAdaptExpressionCore(Expression source, Type destinationType, CompileArgument arg, MemberMapping mapping, Expression destination)
   at Mapster.Adapters.BaseAdapter.CreateAdaptExpression(Expression source, Type destinationType, CompileArgument arg, MemberMapping mapping, Expression destination)
   at Mapster.Adapters.ClassAdapter.CreateInlineExpression(Expression source, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateInlineExpressionBody(Expression source, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateExpressionBody(Expression source, Expression destination, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateAdaptFunc(CompileArgument arg)
   at Mapster.TypeAdapterConfig.CreateMapExpression(CompileArgument arg)

System.InvalidOperationException
No default constructor for type 'CultureInfo', please use 'ConstructUsing' or 'MapWith'
   at Mapster.Adapters.BaseAdapter.CreateInstantiationExpression(Expression source, Expression destination, CompileArgument arg)
   at Mapster.Adapters.ClassAdapter.CreateInstantiationExpression(Expression source, Expression destination, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateInstantiationExpression(Expression source, CompileArgument arg)
   at Mapster.Adapters.ClassAdapter.CreateInlineExpression(Expression source, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateInlineExpressionBody(Expression source, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateExpressionBody(Expression source, Expression destination, CompileArgument arg)
   at Mapster.Adapters.BaseAdapter.CreateAdaptFunc(CompileArgument arg)
   at Mapster.TypeAdapterConfig.CreateMapExpression(CompileArgument arg)

No default constructor for type 'CultureInfo', please use 'ConstructUsing' or 'MapWith'

I tried use MapWith and it worked.

TypeAdapterConfig<Dto, Entity>.NewConfig()
     .MapWith(dto => new Entity
     {
         CultureInfo = CultureInfo.GetCultureInfo(dto.CultureName),
         Id = Guid.Parse(dto.Id),
         Content = dto.Content,
         Note = dto.Note,
     });
TypeAdapterConfig<Entity, Dto>.NewConfig()
            .Map(dto => dto.CultureName, entity => entity.CultureInfo.Name);

This configuration didn't work.

TypeAdapterConfig<Dto, Entity>.NewConfig()
            .Map(entity => entity.CultureInfo, dto => CultureInfo.GetCultureInfo(dto.CultureName));

dto => CultureInfo.GetCultureInfo(dto.CultureName) should work to create an instance of CultureInfo with out a constructor.

Is there something I missed or is this a bug?

[JDCain]

I was getting the same error when trying to use the code generator for the same type of thing when using a Geometery type from a 3rd party library. I was able to get it to work with this:

TypeAdapterConfig<Geometry, Geometry>.NewConfig()
     .ConstructUsing(x => Geometry.DefaultFactory.CreateGeometry(x));
config.GenerateMapper("[name]Mapper")
     .ForType<Agency>() ;

[DocSvartz]

Hello, It Working with config

 [TestMethod]
 public void MappingInsiderCultureInfo()
 {
     TypeAdapterConfig<string, CultureInfo>.NewConfig()
          .MapWith(str=> new CultureInfo(str));

     TypeAdapterConfig<Dto, Entity>.NewConfig()
     .Map(entity => entity.CultureInfo, dto => dto.CultureName);
     TypeAdapterConfig<Entity Dto>.NewConfig()
           .Map(dto => dto.CultureName, entity => entity.CultureInfo.Name);

     var dto = new Dto
     {
         Id = "edcd0ab3-a949-4127-83c0-8a33f4108f09",
         Content = "this is a test content",
         Note = "for test",
         CultureName = "zh-CN"
     };
     var mLocal = dto.Adapt<Entity>();

     mLocal.Id.ToString().ShouldBe("edcd0ab3-a949-4127-83c0-8a33f4108f09");
     mLocal.CultureInfo.Name.ShouldBe("zh-CN");
     mLocal.Content.ShouldBe("this is a test content");
     mLocal.Note.ShouldBe("for test");

 }

[ruxo]

I have similar issue but with a property without setting.

var x = new RealTest
{
    Word = "hello"
};
x.Adapt<Test>().Dump("Mapped!");  // No default constructor

sealed class RealTest {
    public string Word {get;set;}
}

sealed record Test(string Word){
    public bool CanCall => true;
}

Tried Ignore with TypeAdapterConfig but it doesn't work.